A 82-nW Chaotic Map True Random Number Generator Based on a Sub-Ranging SAR ADC
| Autor: | Hoi-Jun Yoo, Yongsu Lee, Kyuho Jason Lee, Unsoo Ha, Minseo Kim |
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| Rok vydání: | 2017 |
| Předmět: |
Comparator
Computer science Random number generation Amplifier 020208 electrical & electronic engineering Chaotic Ranging Successive approximation ADC 02 engineering and technology 020202 computer hardware & architecture CMOS Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES Electrical and Electronic Engineering |
| Zdroj: | IEEE Journal of Solid-State Circuits. 52:1953-1965 |
| ISSN: | 1558-173X 0018-9200 |
| DOI: | 10.1109/jssc.2017.2694833 |
| Popis: | An ultra-low power true random number generator (TRNG) based on a sub-ranging SAR analog-to-digital converter (ADC) is proposed. The proposed TRNG is composed of a coarse-SAR ADC with a low-power adaptive-reset comparator and a low-power dynamic amplifier. The coarse-ADC part is shared with a sub-ranging SAR ADC for area reduction. The shared coarse-ADC not only plays the role of discrete-time chaotic circuit but also reduces the overall SAR ADC energy consumption by selectively activating the fine-SAR ADC. Also, the proposed dynamic residue amplifier consumes only 48 nW and the adaptive-reset comparator generates a chaotic map with only 6-nW consumption. The proposed TRNG core occupies 0.0045 mm2 in 0.18- $\mu \text{m}$ CMOS technology and consumes 82 nW at 270-kbps throughput with 0.6-V supply. It successfully passes all of National Institute of Standards and Technology (NIST) tests, and it achieves the state-of-the-art figure-of-merit of 0.3 pJ/bit. |
| Databáze: | OpenAIRE |
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